Roos Foods cheese is sold under these brand names:

Santa Rosa de Lima

Amigo

Mexicana

Suyapa

La Chapina

La Purisima Crema Nica

Listeriais the name of a bacteria found in soil and water and some animals, including poultry and cattle. It can be present in raw milk and foods made from raw milk. It can also live in food processing plants and contaminate a variety of processed meats.

Symptoms of the illness include: fever, stiff neck, confusion, weakness, vomiting, sometimes preceded by diarrhea. High risk patients include older adults, pregnant women and people with weakened immune systems. It is particularly dangerous amongst pregnant woman as it can be passed to the fetus.

According to the CDC, three of the illnesses were in newborns. Two of the illnesses were mothers of two of the ill newborns. It is unclear if the death was one of the newborns.

The illnesses were diagnosed between August and November of last year, but the CDC said there may be more. The investigation is ongoing.